linux-kernel - Re: [PATCH 2/3] clk: qcom: gpucc-sm8550: Add support for graphics clock controller

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Message-ID: <61d352f4-d486-acf0-73a1-b9ed4e9bf669@quicinc.com>
Date:   Wed, 24 May 2023 23:46:41 +0530
From:   Jagadeesh Kona <quic_jkona@...cinc.com>
To:     Konrad Dybcio <konrad.dybcio@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Bjorn Andersson <andersson@...nel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>
CC:     <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        "Satya Priya Kakitapalli" <quic_skakitap@...cinc.com>,
        Taniya Das <quic_tdas@...cinc.com>,
        <quic_imrashai@...cinc.com>, <quic_ajipan@...cinc.com>
Subject: Re: [PATCH 2/3] clk: qcom: gpucc-sm8550: Add support for graphics
 clock controller

Hi Konrad,

Thanks for your review and sharing your changes!

On 5/20/2023 4:31 AM, Konrad Dybcio wrote:
> 
> 
> On 19.05.2023 23:36, Jagadeesh Kona wrote:
>> Add support for gpucc driver on SM8550, which provides clocks for the
>> graphics subsystem.
>>
>> Signed-off-by: Jagadeesh Kona <quic_jkona@...cinc.com>
>> Signed-off-by: Taniya Das <quic_tdas@...cinc.com>
>> ---
> Looks like we did some duplicate work..
> 
> Please diff it against my take on the driver and check any discrepancies.
> 

> https://github.com/SoMainline/linux/commit/74320ee22f200fb21a8dbfc65aa55cf454825158
> 
The main difference I see is your driver also have clocks under gx 
domain (gpu_cc_gx_*_clk) modelled, but they are really not required 
since there are no clients in linux voting directly on these clocks.

> 
> I also reused 8450 GPUCC (which I sent recently and is likely to get in)
> bindings, you may wish to do something similar.
> 
> https://github.com/SoMainline/linux/commit/aabc4357c975f288add8b9dfa7601c5aa36f2798
> 
Yes, will take care of this in the next series.

> Konrad
>>   drivers/clk/qcom/Kconfig        |   8 +
>>   drivers/clk/qcom/Makefile       |   1 +
>>   drivers/clk/qcom/gpucc-sm8550.c | 609 ++++++++++++++++++++++++++++++++
>>   3 files changed, 618 insertions(+)
>>   create mode 100644 drivers/clk/qcom/gpucc-sm8550.c
>>
>> diff --git a/drivers/clk/qcom/Kconfig b/drivers/clk/qcom/Kconfig
>> index 6bb9b4aff047..b730dd9ed6b1 100644
>> --- a/drivers/clk/qcom/Kconfig
>> +++ b/drivers/clk/qcom/Kconfig
>> @@ -900,6 +900,14 @@ config SM_GPUCC_8350
>>   	  Say Y if you want to support graphics controller devices and
>>   	  functionality such as 3D graphics.
>>   
[skipped]

Thanks & Regards,
Jagadeesh